William h



(No Model.)

W H MURPHY Paper Pulp Shovel Blade.

Patented March 29, 1881.

' WITNESSES MIVE/VTOR,

"PETERS. FNDTOJJTHOGRAPHER, WASMINGTUN, D G

UNITED STATES PATENT OFFICE.

WILLIAM H. MURPHY, OF SYRACUSE, NEW YORK, ASSIGNOR OF ONE-HALF TO A.AMESHOWLETT, OF SAME PLACE.

PAPE R-PULP'SHOVEL-BLADE.

SPECIFICATION forming part of Letters Patent No. 239,397, dated March29, 1881.

Application filed January 27, 1881. (N model.)

To all whom it may concern:

Be it known that I, WILLIAM H. MURPHY, of Syracuse, Onondaga county, NewYork, have invented a new and useful Paper-Pulp Shovel- Blade, of whichthe following is a specification,

reference being bad to the accompanying drawings, in which- Figure 1 isa perspective of a shovel; Fig. 2, a longitudinal section of the same;Fig. 3, IO one of the straps, and Fig. 4 the blade.

The drawings all show, and for illustration only, an ordinaryscoop-shovel and its parts.

This invention consists in the manufacture of shovel-blades direct fromthe paper-pulp, 1 and not from paper or pasteboa-rd, by compressing thepulp into'the shape of a shovelblade between dies of suitableconstruction in a press. In each instance the dies must be of the shapeof the kind of shovel to be manu- 2o factured.

The dies, male-and female, having been prop erly setin the press,paper-pulp in quantity sufficient to make a shovel-blade, and of aboutthat degree of consistency and wetness which 2 it ordinarily has when itleaves the beating:

engine or heater in a paper-mill, is put in between the dies andsubjected to great pressure, by which the pulp is compacted to thedesired thickness and hardness, the greater part of the 0 waterexpelled, and the shovel-blade formed. It is then removed from the dies,trimmed, and dried by steam, hot air, or any other means. It may betrimmed after it is dried. Forms can be used upon which it can besecured while 3 5 drying, and thereby held to its shape, and all warpingand twisting obviated.

' The frog in the shovel-blade may be made in the blade when it is made,or cutout at any time afterward.

The dies may be used cold or heated, and 0 may also be perforated withminute perforations to allow the water to more readily escape while thepulp is being pressed.

The shovel-blade may be rendered waterproof by properly treating thepulp before pressing, or by pain ting the blade with or dipping it intoa waterproofing solution at some stage of the process ofmanufacture. Bythis process the shovel-blade can also be made thicker at some partsthan others, which cannot readily be done where the shovel-blade is madefrom compressed paper or paper-board, and which 18 desirable in thecrown of the shovel and around the frog, where the greatest straincomes. I 5

In the drawings, A is the shovel-blade; B, the handle, (1, the frog, andc a the straps or .plates, all held together by the rivets or screws I)Z) in the ordinary manner.

I am aware that different articles have been pressed up from pulpheretofore; but I do not know that a shovel-blade has been soconstructed.

What I claim as my invention is- 1. A shovelblade manufactured of oom- 6pressed paper-pulp, as a new article of man ufacture.

2. As anew manufacture, a paper-pulp shovelblade, as described, incombination with a handle and plates or straps for securing the same,substantially as set forth.

In witness whereof I have hereunto set my hand this 13th day of January,1881.

WV. H. MURPHY.

